【摘要】 探讨了以无机物为原料,采用共沉淀法制备纳米掺锑氧化锡(ATO)粉体材料时,沉淀后处理对粉体性能的影响。研究采用3种方式对沉淀进行洗涤:(a)沉淀在饼状下直接水洗;(b)沉淀在分散状态下水洗;(c)沉淀在(b)洗涤后再醇洗等。粉体的透射电镜(TEM)结果表明:采用(c)洗涤的分散性最好。在沉淀中添加了几种表面活性剂以制备分散性良好的粉体。TEM结果表明:非离子型表面活性剂聚乙二醇和聚乙烯吡咯烷酮K30制得的粉体为单分散性状态,而离子型表面活性剂十二烷基磺酸钠和油酸钠不能使粉体良好分散。X射线衍射(XRD)结果表明粉体的晶粒尺寸随煅烧温度的升高而增大。温度应高于310℃,Sb取代Sn的掺杂才可能进行。更多还原

【Abstract】 Using inorganic reagents as starting materials,nanometer particles of antimony doped tin oxide (ATO) are prepared by the co-precipitation technique.The influence of precipitation post-treatment on the properties of these particles is discussed.The precipitations are washed in three methods:(a) the precipitations in a cake state washed by water,(b) the precipitations in a dispersion state washed by water,(c) the precipitations washed by ethanol after (b).The transmission electron microscopy(TEM) results show that powders prepared by(c) are in the best dispersion state.Several surfactants are added to the precipitations to prepare powders with good dispersity.The TEM results show that nonionic surfactants such as polyethylene glycol and polyvinyl pyrrolidon K30 can make the powders in monodispersion, however,ionic surfactants like sodium dodecyl sulfonate and sodium oleic acid cannot get the powders in good dispersion.The X-ray diffraction results show that the crystallinity increases with the increase of calcining temperatures. The replacement of a Snby a Sb would take place when the temperature is over 310℃。更多还原